this is the criminal complaint filed today against 19-year-old dzhokhar tsarnaev, the surviving suspect in the boston marathon bombing. and this ten-page criminal complaint is big news for two reasons. it's news for the incredible details of the allegations contained within it, and it is news because of the simple fact that it exists. let's start with the news. the complaint describes in heart stopping detail exactly what authorities -- of the bombing itself. quote, approximately 30 seconds before the first explosion, dzhokhar tsarnaev lifts his phone to his ear as if he is speaking on his cell phone and keeps it there for approximately 18 seconds. a few seconds after he finishes the call, the large crowd of people around him can be seen reacting to the first explosion. virtually every head turns to the east towards the finish line and stares in that direction in apparent bewilderment and alarm. dzhokhar appears calm. he glance to the east and calmly begin but rapidly begins moving to the west. he walks away without his knapsack, having left it on the ground where he had been standing.